Death March kara Hajimaru Isekai Kyusoukyoku (WN) - Book 17 - 17-19. Pink-colored Calamities 4 Decoy Arc

Arren was reincarnated as an extra in the book world. However, unlike the others, Arren was determined to play his role well and be the best extra ever.He was successful until that one unfortunate night that would make his second life an unpredictable one. He also began to doubt that perhaps... He wasn't the useless extra he always thought he was.R18.OMEGAVERSE/ BL

Shen Yubai from the international class is a wealthy young master, enormously powerful and notoriously difficult to deal with, haughty and proud. The transfer student, Shen Sinian, is fresh and handsome, sunny and cheerful, with a mysterious background, almost mythical.Xu Chuning from the regular class and her mother rely on each other, living a meager life, attending school with the aid of scholarships. She should have nothing to do with either Shen Yubai or Shen Sinian.However, recently, schoolmates have noticed that she and the transfer student Shen Sinian are unusually close, their interaction ambiguous. Shen Sinian seems to do everything she says, whereas Shen Yubai from the international class shows special attentiveness towards her.One day, schoolmates even overheard Shen Yubai cornering Xu Chuning, asking her in a deep voice, “Who is better, me or Shen Sinian?”Classmates: “?”Is this some kind of love triangle showdown?

A scientific genius named Thomas Harrier was transmigrated to an imperial prince body after a car accident that took his life. He found out that he is in a world similar to our own with a timeline akin to early twentieth century. The body that he is occupying was the imperial prince of a failing empire who suddenly rose to power after a successful assassination attempt of his father. Unaware that the attack is just the beginning of what is to come. He faces many challenges throughout. Will Thomas Harrier be able to live his second life in peace while running an empire and getting it back to its former glory? Or will he succumb into a conspiracy lurking within the country's borders?

Expect some:

Cold war era techs.

Super battleship with advanced electronics, propulsion, and fire control systems?
Helicopters?
Missiles?
Modern medicines and equipment?
AC-130?
A nuke?
Challenger or Abrams or Leopard?
F-4 Phantom or MIG-21?
Colored TV's.

Everything!!!

PS. Cover not mine, I just found it on google.

I, Luo Huai, one of the three phantom gods of the Orphanage in the south of the city, a person who is capable of combat power and can go back and forth between the three worlds of phantom, mortal, and hell (punishment). …and so on a bunch of configuration.

Very strong, right? Invincible, right?

But the problem is that other people’s resurrection points are in the Mortal Realm… Why is my resurrection point punishing the world! A bunch of fairies!

“I’m invincible, so far I haven’t defeated the zombie man at the door, woo woo woo~” A man surnamed Luo cried bitterly in front of the camera…

With game elements such as [My World] [Hearthstone] [Running Board Game], some features have been slightly modified, players are welcome to enter.

There are online game elements, and there are also infinite streaming elements.

- Description from novelbuddy